Formaldehyde-free preparation method of nitrogen-oxygen co-doped carbon-based supercapacitor electrode material

A technology for supercapacitors and electrode materials, which is applied in the fields of hybrid capacitor electrodes, carbon preparation/purification, hybrid/electric double-layer capacitor manufacturing, etc. Increased rate and effect, increased effect of porous structure

Active Publication Date: 2021-10-22
ANHUI UNIVERSITY
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Different heteroatom doping has obvious differences in improving the physicochemical properties and capacitance performance of carbon materials

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Formaldehyde-free preparation method of nitrogen-oxygen co-doped carbon-based supercapacitor electrode material
  • Formaldehyde-free preparation method of nitrogen-oxygen co-doped carbon-based supercapacitor electrode material
  • Formaldehyde-free preparation method of nitrogen-oxygen co-doped carbon-based supercapacitor electrode material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: A non-formaldehyde-free preparation method of a nitrogen-oxygen co-doped carbon-based supercapacitor electrode material

[0031] A method for preparing a nitrogen-oxygen co-doped carbon-based supercapacitor electrode material without formaldehyde, comprising the following steps:

[0032] Step 1: Mix melamine, D-glucose anhydrous, sodium bicarbonate and magnesium hydroxide, put them into a resonant sound mixing device, and process them for 12 minutes at a frequency of 100 Hz and an amplitude of 1.5 mm to obtain mixed reaction raw materials; Weigh 1.5 grams of D-glucose anhydrous, 1.5 grams of melamine, and 3.0 grams of sodium bicarbonate.

[0033] Step 2: Mix the mixed reaction raw materials obtained in step 1 with deionized water according to the mass ratio, stir evenly, and perform ultrasonic treatment for 20 minutes; the volume of deionized water is 100 mL

[0034] Step 3: Place the aqueous solution obtained in step 2 into a heating device with a steam con...

Embodiment 2-6

[0043] Example 2-6: A non-formaldehyde-free preparation method of a nitrogen-oxygen co-doped carbon-based supercapacitor electrode material

[0044] Weigh 5 groups of raw materials respectively:

Embodiment 2

[0045] Embodiment 2: 1.5 grams of D-glucose anhydrous, 1.5 grams of melamine, and 3.0 grams of sodium bicarbonate.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to view more

Abstract

The invention provides a non-formaldehyde-free preparation method of nitrogen and oxygen co-doped carbon-based supercapacitor electrode materials, using melamine (nitrogen source), D-anhydrous glucose (carbon source), sodium bicarbonate (porogen), Magnesium hydroxide (pore-enlarging agent) is used as raw material, and it is processed by resonance acoustic mixing, microwave-assisted solvent evaporation reaction, steam explosion treatment of resin, high-temperature anaerobic carbonization, micronized ball milling with nitrogen gas, cleaning and vacuum drying, etc., to obtain nitrogen-oxygen co- Doped carbon-based supercapacitor electrode materials. The specific surface area of ​​nitrogen and oxygen co-doped carbon-based supercapacitor electrode materials can reach 700-800m 2 / g, the specific capacitance can reach 160‑170F / g (the current density is 1 A / g).

Description

technical field [0001] The invention belongs to the technical field of supercapacitors, and relates to a method for preparing an electrode material of a nitrogen-oxygen co-doped carbon-based supercapacitor without formaldehyde. Background technique [0002] Supercapacitors, also known as electrochemical capacitors, are widely used in energy storage devices to replace batteries and fuel cells due to their fast charge-discharge speed, long cycle life and high power density. According to the different energy storage mechanisms, supercapacitors can be divided into three categories. Electric Double-Layer Capacitor (EDLC): Stores electrical energy through the double-layer effect, which occurs at the interface between a conductive electrode and an adjacent liquid electrolyte. Electrochemical pseudocapacitor: its energy storage mechanism is completely different from that of an electric double layer capacitor. The electrode material of a pseudocapacitor stores and releases energy th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/34H01G11/86C01B32/05
CPCC01B32/05H01G11/34H01G11/86Y02E60/13
Inventor 张忠洁万彭陈鹏鹏吴明元
Owner ANHUI UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products